Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 53 for “"field size"”.
-
The Effect of Target Position and Tactual Recognition Field Size on Touch Bias and Accuracy
… a specific target varies according to the size of the tactual recognition field. Out of three square tactual recognition field sizes, this study sought to match these fields with the amount of touch bias occurring in each location (i.e., small amount of touch bias requires only a small …
-
Characterization of Oslds For Use In Small Field Photon Beam Dosimetry
… to the OSL dose calculation formula, scatter and field size dependence factor. The field size dependence factor was proven to be unity. The minimum field size the masked OSLD system can accommodate as an audit tool was determined to be 10 mm diameter field for circular cones or 1 x 1 …
-
Advancement of A 3D Computational Phantom and Its Age Scaling Methodologies For Retrospective Dose Reconstruction Studies
… nearest age-matched phantom while using the same field size and anatomical landmark dependent field size in two different scenarios.</p> <p>This study showed that phantoms were implemented in DICOM format within 3% of points/volume of our original phantoms. The heights and dosimetric accuracy were …
-
Evaluation of Mixed-Vegetation Plantings As Avian Nesting Habitat in Eastern South Dakota
… of noxious weeds may have on nest success. Three fields of MVP were randomly selected from each of the 2000-2004 year-class plantings. The hockey stick search method was used to systematically search 10% of each field’s total area. The 2005 field season yielded 178 nests while 362 were located in …
-
On error correcting codes for distributed storage
… that gives regenerating codes with small field size. For more general parameters we define a Johnson graph code as a subspace of labelings of the vertices in a Johnson graph with the property that labelings are uniquely determined by their restriction to vertex neighborhoods specified by …
-
Irrigation cost models to assess the feasibility and potential expansion of large-scale riparian irrigation in Virginia
… were linearly related to cost, except for field size. Further analysis showed that field size could be linearly transformed by using its inverse. The database and ordinary least squares were used to build econometric equations which summarized the design models' information. These …
-
Characterization of a 6 MV photon beam in terms of primary and scattered dose components
… as a fraction of the total dose in a reference field at a reference depth, while μ 0 describes how the primary dose changes with depth in a medium. The scattered component is the difference between the primary and total dose. μ 0 for the beam in water was determined in four …
-
Computing the trace of an endomorphism of a supersingular elliptic curve
… the degree of the isogenies, and the log of the field-size are all O(n), the trace of the endomorphism can be computed in O(n⁶) bit operations. This makes explicit a theorem of Kohel which states that such a polynomial time algorithm exists. The given procedure is based on Schoof's point-counting …
-
The application of high order finite difference methods to the diffusion-convection equation
… dimensionless fluid system and also in a field size fluid system. Comparisions of the numerical results with the analytical solution of the equation are provided as are the feasibility and validity of the 5PFDM. Based on the numerical results from this method, it can be concluded that the …
-
Numerical simulation of forward combustion in a radial system
… results discussed. The analysis is applied to field size simulations of a forward combustion project to permit direct field analyses of significant importance for accurate reproductions of past field performances. The results of the simulation defines the principal thermal and hydrodynamic …
-
HIGH FIELD MAGNETIC RESONANCE IMAGING-BASED GEL DOSIMETRY FOR SMALL RADIATION FIELDS
Small megavoltage photon radiation fields (< 3cm diameter) are used in advanced radiation therapy techniques, such as intensity modulated radiotherapy, and stereotactic radiosurgery, as well as for cellular and preclinical radiobiology studies (very small fields, <1 mm diameter). Radiation dose …
-
Characterization of p-type silicon semiconductor detectors for use in in vivo dosimetry
… patient dose monitoring in photon and electron fields was evaluated for a number of commonly-encountered clinical parameters. Effects of energy, field size, source-to-surface distance, presence of beam modifiers, beam orientation, and temperature were investigated. Shielding effects and batch …
-
Multiple access networks over finite fields : optimality of separation, randomness and linearity
… transmit and noise alphabets belong to a finite field. We show that source-channel separation holds when the additive noise is independent of inputs. However, for input-dependent noise, separation may not hold. For channels over the binary field, we derive the expression for the probability of …
-
Codes from norm-trace curves: local recovery and fractional decoding
Codes from curves over finite fields were first developed in the late 1970's by V. D. Goppa and are known as algebraic geometry codes. Since that time, the construction has been tailored to fit particular applications, such as erasure recovery and error correction using less received information …
-
Land Use Changes and Pheasant Declines in Eastern South Dakota
… the two time periods. Hatching success, clutch size, rates of abandonment, and nest destruction were also similar. Nesting habitat occurred on 70% of the study area in 1958, 62% in 1959, 74% in 197 7, and 66% in 1978. The mean field size was 6.7 ha in 1958, 6.9 ha in 1959, 10.2 ha in 197 7, and …
-
Monte Carlo investigations of radiotherapy beams: studies of conventional, stereotactic and unflattened beams
… other silicon detectors overestimate the dose as field size and depth increase. To overcome this, a mechanism for correction has to be determined. For this reason, this investigation compares experimental data and calculated results using Monte Carlo method at 6 MV photon energy from a Varian …
-
The method of multiplicities
… and in obtaining strong bounds for the size of Kakeya Sets. Remarkably, all these applications have relied on very simple and elementary properties of polynomials such as the sparsity of the zero sets of low degree polynomials. In this thesis we improve on several of the results …
-
Hydrogen silsesquioxane (HSQ) for use in nano imprint lithography
… a high throughput, low-cost process, and high field size for nano-lithography. EBL is a technique which can generate very small features (sub-10nm) but is a serial process which has undesirable time constraints. EUV is the latest generation of photo-lithography which can produce 35nm features, …
-
Habitat use, nest success, and management recommendations for grassland birds of the Canaan Valley National Wildlife Refuge, West Virginia
… throughout the United States. However, idle hayfields and pastures in the eastern United States may provide adequate nesting habitat for grassland species displaced from their native habitat. The objectives of this study were to: (1) compare grassland bird abundance, diversity, and richness of …
-
Direct Inputs to off Α and G9 Ganglion Cells From Aii Amacrine Cells In Rabbit Retina
… of morphological criteria such as dendritic field size, dye coupling, mosaic properties and stratification depth. The AII amacrine cells (AIIs) were labeled with an antibody against calretinin and glycine receptors were marked with an antibody against the α1 subunit. This material was …
Page 1 of 3